Zobrazeno 1 - 10
of 118
pro vyhledávání: '"J.R. Shepard"'
Autor:
J.R. Shepard, C.E. Price
Publikováno v:
Physics Letters B. 259:1-6
We compute properties of the nucleon in a hybrid chiral model based on the linear σ-model with quark degrees of freedom treated explicity. In contrast to previous calculations, we do not use the hedgehog ansatz. Instead we solve self-consistently fo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d3d0d50eea1d9149311d5eea38ad6a9f
https://doi.org/10.1016/0370-2693(91)90123-8
https://doi.org/10.1016/0370-2693(91)90123-8
Publikováno v:
Physics Letters B. 251:241-244
We have calculated pion exchange current corrections to the magnetic moments of closed shell ±1 particle nuclei near A=16 and 40 within the framework of quantum hadro-dynamics (QHD). We find that the correction is significant and that, in general, t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::94c58caffc288298b553ac8e32dde376
https://doi.org/10.1016/0370-2693(90)90929-z
https://doi.org/10.1016/0370-2693(90)90929-z
Publikováno v:
Physical review. C, Nuclear physics. 45(5)
The distribution of isoscalar monopole strength is calculated in {sup 16}O and {sup 40}Ca using the Dirac-Hartree random phase approximation. The resulting strength has a wide distribution and the average energy is lower than one would expect from th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4c7c5f88479ca186bf1a1fa2e6fe9609
https://pubmed.ncbi.nlm.nih.gov/9967986
https://pubmed.ncbi.nlm.nih.gov/9967986
Publikováno v:
Physics Letters B. 56:135-138
The coupling of pickup-stripping channels in 3 He elastic scattering has been shown to have a large effect on the elastic cross section at back angles for higher projectile energies. Quantitative treatment of these effects leads to the conclusion tha
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::467af177e0dc33cca3be1e6a58b9573d
https://doi.org/10.1016/0370-2693(75)90285-3
https://doi.org/10.1016/0370-2693(75)90285-3
Publikováno v:
Physical Review Letters. 49:14-17
A relativistic description of deuteron elastic scattering based on a two-particle Dirac Hamiltonian containing phenomenological nucleon-nucleus Dirac potentials is developed. The resulting effective central potential is like that obtained with a fold
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c5d141685a9bd4dd618d6c4ac809aaf0
https://doi.org/10.1103/physrevlett.49.14
https://doi.org/10.1103/physrevlett.49.14
Publikováno v:
Nuclear Physics A. 275:189-211
Strong transitions in the 58 Ni( 3 He, α) 57 Ni reaction were analyzed using both the zero-range and exact finite-range DWBA. Data considered covered a range of bombarding energies from 15 to 205 MeV. The zero-range DWBA described all data well when
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ab908328a679c60bb32e01734066e3b5
https://doi.org/10.1016/0375-9474(77)90283-4
https://doi.org/10.1016/0375-9474(77)90283-4
Autor:
R.L. Helmer, O. Häusser, S. Yen, K. P. Jackson, R.S. Henderson, R. Sawafta, J.R. Shepard, K.H. Hicks, A. Celler, C. A. Miller, R. Abegg, W.P. Alford, J. Lisantti
Publikováno v:
Physics Letters B. 201:29-33
Differences of the polarization ( P ) and analyzing power ( A y ) have been measured between 5° and 14° for the lowest isoscalar 1 + and isovector 1 + and 2 + states in 12 C excited by 400 MeV protons. This is the first measurement of P - A y in an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1fbe53cc3f69796c86c7781668381727
https://doi.org/10.1016/0370-2693(88)90074-3
https://doi.org/10.1016/0370-2693(88)90074-3
Publikováno v:
Physical Review C. 36:2212-2220
Transverse electron scattering form factors have been measured for isoscalar transitions to T = 0 levels in /sup 24/Mg at 1.37 MeV (J/sup ..pi../ = 2/sup +/), 5.24 MeV (3/sup +/), 6.01 MeV (4/sup +/), and for the unresolved T = 0 doublet at 4.12 MeV
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::84d5fba4fb176c008f6f07bb563147cb
https://doi.org/10.1103/physrevc.36.2212
https://doi.org/10.1103/physrevc.36.2212
Autor:
J.R. Shepard, B. Harmatz
Publikováno v:
Nuclear Data Sheets. 20:373-427
Nuclear structure information available to December 1976 has been reviewed. The level properties obtained from various reaction and decay experiments are shown in the drawings. Experimental details, references, and comments are given in the text. Lev
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b0a355e26d610e35d229a57ba22f8a1e
https://doi.org/10.1016/s0090-3752(77)80012-4
https://doi.org/10.1016/s0090-3752(77)80012-4
Publikováno v:
Nuclear Physics A. 288:269-278
Energy spectra of deuterons from the 27 Al(n, d) 26 Mg reaction due to 56.3 MeV neutrons incident have been measured for 10° ≦ θ c.m. ≦ 55°. The angular distributions for the excitations observed at 0.0, 1.81, and 4.33 MeV are quite well descr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5b6076e5c416256697a507362ec547ae
https://doi.org/10.1016/0375-9474(77)90134-8
https://doi.org/10.1016/0375-9474(77)90134-8